Accurate processing method for pendulum-swept large-breadth optical satellite

The invention discloses an accurate processing method of a pendulum-swept large-breadth optical satellite. According to pendulum-swept large-breadth satellite observation data and internal and external calibration parameters, on one hand, the scanning mechanism mechanism is analyzed and thus a positive and negative corresponding relation of measured values of an inductosyn is determined based on the scanning mechanism mechanism, and a conversion relationship between the scanning mechanism and a satellite body is established to obtain a transformation matrix; on the other hand, the imaging process is deduced to realize modeling of track parameters and attitude parameters, attitude and orbit parameters at the imaging moment are calculated, a precise processing geometric model is constructedaccording to the transformation matrix and the attitude and orbit parameters at the imaging moment, equivalent geometric model conversion is carried out on the precise processing geometric model by constructing an RFM model a